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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754508720

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754508720

Diamond specifications and retailer prices

From $585 AUD
$411 USD
As of November 1, 2026
Save $6,163 AUD (91%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: $6,748 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508720 or 754508720. Listed at 33 retailers as of October 31, 2026, with prices from $585 to $6,748, a $6,163 spread on the same certified stone. Brilliant Earth lists it at $6,748. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508720
Dimensions7.31 × 7.36 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.31 mm7.36 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508720
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,573 AUD|Low: $585 AUD|High: $4,271 AUD|Avg: $1,699 AUD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 1, 2026
Retailer 8$585 AUD
Retailer 17$811 AUD
Retailer 2$847 AUD
Retailer 21$856 AUD
Retailer 7$932 AUD
Retailer 10$961 AUD
Retailer 16$1,064 AUD
Retailer 9$1,073 AUD
Retailer 20$1,131 AUD
Retailer 12$1,187 AUD
Retailer 11$1,210 AUD
Retailer 13$1,513 AUD
Retailer 19$1,528 AUD
Retailer 3$1,750 AUD
Retailer 4$2,254 AUD
Retailer 6$2,317 AUD
Retailer 14$2,339 AUD
Retailer 18$2,473 AUD
Retailer 15$2,500 AUD
Retailer 1$2,573 AUD
Retailer 22$3,210 AUD
Retailer 5$4,271 AUD

37 data points across 22 retailers

33 retailers$585 AUD to $6,748 AUD

Retailer 1
-
$481 AUD
$338 USD
Price last confirmed 22 days ago
Retailer 2
-
$508 AUD
$357 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$558 AUD
$392 USD
View
Price last confirmed 26 days ago
A
Retailer 4
-
$585 AUD
$411 USD
View
Final sale: no returns
Retailer 5
-
$591 AUD
$415 USD
View
Price last confirmed 40 days ago
Retailer 6
-
$596 AUD
$419 USD
View
Price last confirmed 22 days ago
Retailer 7
-
$596 AUD
$419 USD
View
Price last confirmed 30 days ago
A
Retailer 8
-
$596 AUD
$419 USD
View
Retailer 9
-
$624 AUD
$438 USD
View
Price last confirmed 33 days ago
A
Retailer 10
-
$811 AUD
$570 USD
View
Retailer 11
-
$847 AUD
£469 GBP
View
Price last confirmed 15 days ago
A
Retailer 12
-
$856 AUD
HK$4,700 HKD
View
A
Retailer 13
-
$932 AUD
$655 USD
View
A
Retailer 14
-
$961 AUD
$675 USD
View
A
Retailer 15
-
$1,064 AUD
€712 EUR
View
A
Retailer 16
-
$1,073 AUD
$754 USD
View
A
Retailer 17
-
$1,131 AUD
ZAR 12,840 ZAR
View
A
Retailer 18
-
$1,187 AUD
£656 GBP
View
A
Retailer 19
-
$1,210 AUD
View
B+
Retailer 20
-
$1,513 AUD
$1,063 USD
View
B+
Retailer 21
-
$1,528 AUD
View
B+
Retailer 22
-
$1,750 AUD
$1,229 USD
View
Retailer 23
-
$2,117 AUD
$1,487 USD
View
Price last confirmed 22 days ago
Retailer 24
-
$2,239 AUD
$1,573 USD
View
Price last confirmed 32 days ago
B+
Retailer 25
-
$2,254 AUD
$1,583 USD
View
B+
Retailer 26
-
$2,317 AUD
$1,628 USD
View
B+
Retailer 27
-
$2,339 AUD
$1,643 USD
View
B+
Retailer 28
-
$2,473 AUD
View
B+
Retailer 29
-
$2,500 AUD
SGD 2,373 SGD
View
B+
Retailer 30
-
$2,573 AUD
£1,423 GBP
View
B+
Retailer 31
-
$3,210 AUD
$2,255 USD
View
B
Retailer 32
-
$4,271 AUD
$3,000 USD
View
Most Expensive
B
Brilliant Earth
18668765Y · Oct 31
$6,748 AUD
$4,740 USD
View
32 more retailers have this diamond
Prices start from $585 AUDSave up to $6,163 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$585 AUD