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Round|Lab Grown|IGI

1.55ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG768651128

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768651128

Diamond specifications and retailer prices

From $473 AUD
$332 USD
As of October 29, 2026
Save $3,668 AUD (89%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $4,140 AUD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.55ct lab-grown round diamond

This 1.55ct 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 LG768651128 or 768651128. Listed at 27 retailers as of October 27, 2026, with prices from $473 to $4,140, a $3,668 spread on the same certified stone. Queensmith lists it at $4,140. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768651128
Dimensions7.35 × 7.39 × 4.60 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
7.35 mm7.39 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768651128
Side View
Table 56.0%Crown 36°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.4%

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: Oct 29
Current: $934 AUD|Low: $454 AUD|High: $5,694 AUD|Avg: $1,484 AUD
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
October 31, 2026
Retailer 4$473 AUD
Retailer 2$537 AUD
Retailer 6$587 AUD
Retailer 7$790 AUD
Retailer 15$804 AUD
Retailer 1$934 AUD
Retailer 8$1,007 AUD
Retailer 14$1,008 AUD
Retailer 11$1,047 AUD
Retailer 9$1,367 AUD
Retailer 13$1,367 AUD
Retailer 3$2,059 AUD
Retailer 12$2,363 AUD
Retailer 5$2,504 AUD
Retailer 10$3,701 AUD

34 data points across 15 retailers

27 retailers$473 AUD to $4,140 AUD

A
Cheapest Retailer
-
$473 AUD
$332 USD
A
Retailer 2
-
$537 AUD
$377 USD
View
Final sale: no returns
A
Retailer 3
-
$548 AUD
$385 USD
View
A
Retailer 4
-
$587 AUD
$412 USD
View
A
Retailer 5
-
$587 AUD
$412 USD
View
A
Retailer 6
-
$656 AUD
HK$3,600 HKD
View
A
Retailer 7
-
$790 AUD
$555 USD
View
A
Retailer 8
-
$804 AUD
$565 USD
View
A
Retailer 9
-
$934 AUD
€625 EUR
View
A
Retailer 10
-
$1,007 AUD
View
A
Retailer 11
-
$1,008 AUD
ZAR 11,435 ZAR
View
A
Retailer 12
-
$1,047 AUD
£579 GBP
View
A
Retailer 13
-
$1,061 AUD
$745 USD
View
A
Retailer 14
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$1,367 AUD
$960 USD
View
A
Retailer 15
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$1,367 AUD
View
B+
Retailer 16
-
$1,439 AUD
$1,011 USD
View
Retailer 17
-
$1,599 AUD
$1,123 USD
View
Price last confirmed 45 days ago
B+
Retailer 18
-
$1,879 AUD
SGD 1,784 SGD
View
B+
Retailer 19
-
$1,885 AUD
$1,324 USD
View
B+
Retailer 20
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$1,947 AUD
$1,368 USD
View
B+
Retailer 21
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$1,996 AUD
$1,402 USD
View
B+
Retailer 22
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$2,059 AUD
$1,446 USD
View
B+
Retailer 23
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$2,300 AUD
$1,615 USD
View
B+
Retailer 24
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$2,363 AUD
£1,307 GBP
View
Retailer 25
-
$2,504 AUD
View
Price last confirmed 23 days ago
B
Retailer 26
-
$3,701 AUD
$2,600 USD
View
Most Expensive
B
Queensmith
LG768651128 · Oct 27
$4,140 AUD
£2,290 GBP
View
26 more retailers have this diamond
Prices start from $473 AUDSave up to $3,668 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
1.55ct Round
$473 AUD