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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG778644701

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778644701

Diamond specifications and retailer prices

From $412 SGD
$322 USD
As of October 29, 2026
Save $2,823 SGD (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,234 SGD at Brilliant Earth · As of October 30, 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 LG778644701 or 778644701. Listed at 24 retailers as of October 29, 2026, with prices from $412 to $3,234, a $2,823 spread on the same certified stone. Brilliant Earth lists it at $3,234. 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 angle34.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778644701
Dimensions7.33 × 7.35 × 4.57 mm
L/W Ratio1.00
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
7.33 mm7.35 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778644701
Side View
Table 56.0%Crown 34.8°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: $3,234 SGD|Low: $412 SGD|High: $5,011 SGD|Avg: $1,222 SGD|-35.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 6
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Retailer 23
October 31, 2026
Retailer 4$412 SGD
Retailer 5$460 SGD
Retailer 19$478 SGD
Retailer 12$514 SGD
Retailer 15$514 SGD
Retailer 22$655 SGD
Retailer 11$710 SGD
Retailer 8$823 SGD
Retailer 20$828 SGD
Retailer 10$883 SGD
Retailer 16$896 SGD
Retailer 2$909 SGD
Retailer 9$1,198 SGD
Retailer 23$1,231 SGD
Retailer 17$1,245 SGD
Retailer 7$1,636 SGD
Retailer 13$1,641 SGD
Retailer 3$1,699 SGD
Retailer 14$1,828 SGD
Retailer 21$2,024 SGD
Retailer 6$2,057 SGD
Retailer 18$2,166 SGD
Brilliant Earth$3,234 SGD

24 data points across 23 retailers

24 retailers$412 SGD to $3,234 SGD

A
Cheapest Retailer
-
$412 SGD
$322 USD
A
Retailer 2
-
$460 SGD
$360 USD
View
Final sale: no returns
A
Retailer 3
-
$478 SGD
$374 USD
View
A
Retailer 4
-
$514 SGD
$402 USD
View
A
Retailer 5
-
$514 SGD
$402 USD
View
A
Retailer 6
-
$655 SGD
£404 GBP
View
A
Retailer 7
-
$710 SGD
$555 USD
View
A
Retailer 8
-
$823 SGD
€613 EUR
View
A
Retailer 9
-
$828 SGD
$648 USD
View
A
Retailer 10
-
$883 SGD
ZAR 11,164 ZAR
View
A
Retailer 11
-
$896 SGD
A$1,078 AUD
View
A
Retailer 12
-
$909 SGD
£560 GBP
View
A
Retailer 13
-
$1,198 SGD
A$1,442 AUD
View
B+
Retailer 14
-
$1,231 SGD
$963 USD
View
B+
Retailer 15
-
$1,245 SGD
$974 USD
View
B+
Retailer 16
-
$1,268 SGD
$992 USD
View
B+
Retailer 17
-
$1,636 SGD
View
B+
Retailer 18
-
$1,641 SGD
$1,284 USD
View
B+
Retailer 19
-
$1,699 SGD
$1,329 USD
View
B+
Retailer 20
-
$1,828 SGD
$1,430 USD
View
B+
Retailer 21
-
$2,024 SGD
$1,583 USD
View
B+
Retailer 22
-
$2,057 SGD
£1,267 GBP
View
B+
Retailer 23
-
$2,166 SGD
A$2,607 AUD
View
Most Expensive
B
Brilliant Earth
21000796A · Oct 30
$3,234 SGD
$2,530 USD
View
23 more retailers have this diamond
Prices start from $412 SGDSave up to $2,823 SGD

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
$412 SGD