CaratHunter
Plans
Oval|Lab Grown|IGI

12.83ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG573313066

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG573313066

Diamond specifications and retailer prices

From $2,648 SGD
£1,631 GBP
As of October 27, 2026
Save $21,016 SGD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $23,663 SGD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.83ct lab-grown oval diamond

This 12.83ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG573313066 or 573313066. Listed at 12 retailers as of October 27, 2026, with prices from $2,648 to $23,663, a $21,016 spread on the same certified stone. Brilliant Earth lists it at $23,663. 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

12.83
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573313066
Dimensions19.20 × 13.12 × 8.20 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
19.20 mm13.12 mm12.83 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573313066
Side View
Table 59.5%Crown 36.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $25,683 SGD|Low: $2,648 SGD|High: $29,239 SGD|Avg: $13,849 SGD
Brilliant Earth
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
November 1, 2026
Retailer 16$2,648 SGD
Retailer 12$3,732 SGD
Retailer 17$4,698 SGD
Retailer 7$5,138 SGD
Retailer 11$5,519 SGD
Retailer 13$5,662 SGD
Retailer 6$5,667 SGD
Retailer 5$6,777 SGD
Retailer 2$7,581 SGD
Retailer 4$8,187 SGD
Retailer 18$11,217 SGD
Retailer 14$14,356 SGD
Retailer 3$15,876 SGD
Retailer 15$17,655 SGD
Brilliant Earth$25,683 SGD
Retailer 8$27,051 SGD
Retailer 10$27,051 SGD
Retailer 9$29,239 SGD

11 data points across 18 retailers

12 retailers$2,648 SGD to $23,663 SGD

A
Cheapest Retailer
-
$2,648 SGD
£1,631 GBP
A
Retailer 2
-
$3,732 SGD
$2,919 USD
View
B+
Retailer 3
-
$4,698 SGD
$3,675 USD
View
B
Retailer 4
-
$5,519 SGD
£3,399 GBP
View
B
Retailer 5
-
$5,662 SGD
$4,429 USD
View
B
Retailer 6
-
$7,581 SGD
$5,930 USD
View
B
Retailer 7
-
$8,187 SGD
$6,404 USD
View
B
Retailer 8
-
$11,217 SGD
$8,774 USD
View
B
Retailer 9
-
$14,356 SGD
$11,230 USD
View
B
Retailer 10
-
$15,876 SGD
$12,419 USD
View
B
Retailer 11
-
$17,655 SGD
$13,810 USD
View
Most Expensive
B
Brilliant Earth
22301618A · Oct 31
$23,663 SGD
$18,510 USD
View
11 more retailers have this diamond
Prices start from $2,648 SGDSave up to $21,016 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
12.83ct Oval
$2,648 SGD