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 HK$16,250 HKD
£1,631 GBP
As of October 27, 2026
Save HK$128,982 HKD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$145,231 HKD 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 HK$16,250 to HK$145,231, a HK$128,982 spread on the same certified stone. Brilliant Earth lists it at HK$145,231. 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: HK$157,628 HKD|Low: HK$16,250 HKD|High: HK$179,451 HKD|Avg: HK$85,000 HKD
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 16HK$16,250 HKD
Retailer 12HK$22,903 HKD
Retailer 17HK$28,834 HKD
Retailer 7HK$31,535 HKD
Retailer 11HK$33,870 HKD
Retailer 13HK$34,750 HKD
Retailer 6HK$34,782 HKD
Retailer 5HK$41,596 HKD
Retailer 2HK$46,527 HKD
Retailer 4HK$50,247 HKD
Retailer 18HK$68,842 HKD
Retailer 14HK$88,110 HKD
Retailer 3HK$97,441 HKD
Retailer 15HK$108,355 HKD
Brilliant EarthHK$157,628 HKD
Retailer 8HK$166,023 HKD
Retailer 10HK$166,023 HKD
Retailer 9HK$179,451 HKD

11 data points across 18 retailers

12 retailersHK$16,250 HKD to HK$145,231 HKD

A
Cheapest Retailer
-
HK$16,250 HKD
£1,631 GBP
A
Retailer 2
-
HK$22,903 HKD
$2,919 USD
View
B+
Retailer 3
-
HK$28,834 HKD
$3,675 USD
View
B
Retailer 4
-
HK$33,870 HKD
£3,399 GBP
View
B
Retailer 5
-
HK$34,750 HKD
$4,429 USD
View
B
Retailer 6
-
HK$46,527 HKD
$5,930 USD
View
B
Retailer 7
-
HK$50,247 HKD
$6,404 USD
View
B
Retailer 8
-
HK$68,842 HKD
$8,774 USD
View
B
Retailer 9
-
HK$88,110 HKD
$11,230 USD
View
B
Retailer 10
-
HK$97,441 HKD
$12,419 USD
View
B
Retailer 11
-
HK$108,355 HKD
$13,810 USD
View
Most Expensive
B
Brilliant Earth
22301618A · Oct 31
HK$145,231 HKD
$18,510 USD
View
11 more retailers have this diamond
Prices start from HK$16,250 HKDSave up to HK$128,982 HKD

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
HK$16,250 HKD