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Round|Lab Grown|IGI

1.23ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG759507271

Shape and cutting style on the report: Round brilliant

Certificate IGI LG759507271

Diamond specifications and retailer prices

From $252 SGD
As of November 5, 2026
Save $1,260 SGD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,512 SGD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG759507271 or 759507271. Listed at 21 retailers as of November 4, 2026, with prices from $252 to $1,512, a $1,260 spread on the same certified stone. Reve Diamonds lists it at $1,512. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.23
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG759507271
Dimensions6.91 × 6.88 × 4.21 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
6.91 mm6.88 mm1.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG759507271
Side View
Table 60.0%Crown 33.7°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.0%

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 5
Current: $559 SGD|Low: $249 SGD|High: $1,512 SGD|Avg: $691 SGD|+3.3%
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
Reve Diamonds
November 6, 2026
Retailer 7$252 SGD
Retailer 5$281 SGD
Retailer 15$291 SGD
Retailer 2$312 SGD
Retailer 3$312 SGD
Retailer 4$542 SGD
Retailer 1$559 SGD
Retailer 13$595 SGD
Retailer 9$612 SGD
Retailer 16$626 SGD
Retailer 14$671 SGD
Retailer 10$830 SGD
Retailer 8$1,003 SGD
Retailer 12$1,005 SGD
Retailer 6$1,070 SGD
Retailer 11$1,452 SGD
Reve Diamonds$1,512 SGD

34 data points across 17 retailers

21 retailers$252 SGD to $1,512 SGD

A
Cheapest Retailer
-
$252 SGD
A
Retailer 2
-
$281 SGD
View
Final sale: no returns
A
Retailer 3
-
$291 SGD
View
Retailer 4
-
$312 SGD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$312 SGD
View
B+
Retailer 6
-
$508 SGD
View
B+
Retailer 7
-
$542 SGD
View
B+
Retailer 8
-
$559 SGD
View
B+
Retailer 9
-
$595 SGD
View
B+
Retailer 10
-
$612 SGD
View
B+
Retailer 11
-
$626 SGD
View
B+
Retailer 12
-
$626 SGD
View
B+
Retailer 13
-
$671 SGD
View
B
Retailer 14
-
$830 SGD
View
B
Retailer 15
-
$852 SGD
View
Retailer 16
-
$994 SGD
View
Price last confirmed 46 days ago
B
Retailer 17
-
$1,003 SGD
View
B
Retailer 18
-
$1,005 SGD
View
B
Retailer 19
-
$1,070 SGD
View
B
Retailer 20
-
$1,452 SGD
View
Most Expensive
B
Reve Diamonds
932605E8E · Nov 4
$1,512 SGD
$1,183 USD
View
20 more retailers have this diamond
Prices start from $252 SGDSave up to $1,260 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
1.23ct Round
$252 SGD