CaratHunter
Plans
Round|Lab Grown|IGI

0.51ct D SI1 Round Lab Grown Diamond

VG • D/SI1 • IGI LG803661808

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803661808

Diamond specifications and retailer prices

From HK$1,004 HKD
As of October 30, 2026
Save HK$5,134 HKD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$6,138 HKD at MOH London · As of October 25, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG803661808 or 803661808. Listed at 14 retailers as of October 25, 2026, with prices from HK$1,004 to HK$6,138, a HK$5,134 spread on the same certified stone. MOH London lists it at HK$6,138. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803661808
Dimensions5.11 × 5.06 × 3.09 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.11 mm5.06 mm0.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG803661808
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 40.7°Culet: NoneDepth 60.9%

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 30
Current: HK$6,138 HKD|Low: HK$362 HKD|High: HK$6,267 HKD|Avg: HK$1,911 HKD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 27, 2026
Retailer 4HK$362 HKD
Retailer 10HK$745 HKD
Retailer 3HK$785 HKD
Retailer 7HK$1,295 HKD
Retailer 5HK$1,406 HKD
Retailer 6HK$1,590 HKD
Retailer 9HK$1,781 HKD
Retailer 8HK$1,789 HKD
Retailer 12HK$2,392 HKD
Retailer 11HK$2,660 HKD
Retailer 2HK$2,824 HKD
MOH LondonHK$6,138 HKD

35 data points across 12 retailers

14 retailersHK$1,004 HKD to HK$6,138 HKD

Retailer 1
-
HK$675 HKD
$86 USD
Price last confirmed 13 days ago
Retailer 2
-
HK$785 HKD
$100 USD
View
Price last confirmed 12 days ago
Retailer 3
-
HK$887 HKD
$113 USD
View
Price last confirmed 12 days ago
B+
Retailer 4
-
HK$1,004 HKD
View
Retailer 5
-
HK$1,295 HKD
$165 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
HK$1,406 HKD
£141 GBP
View
B+
Retailer 7
-
HK$1,590 HKD
€193 EUR
View
B+
Retailer 8
-
HK$1,781 HKD
$227 USD
View
Retailer 9
-
HK$1,789 HKD
$228 USD
View
Price last confirmed 13 days ago
Retailer 10
-
HK$2,392 HKD
SGD 412 SGD
View
Price last confirmed 7 days ago
B
Retailer 11
-
HK$2,660 HKD
$339 USD
View
Retailer 12
-
HK$2,683 HKD
$342 USD
View
Price last confirmed 13 days ago
B+
Retailer 13
-
HK$2,824 HKD
$360 USD
View
Most Expensive
B
MOH London
LG803661808 · Oct 25
HK$6,138 HKD
£616 GBP
View
13 more retailers have this diamond
Prices start from HK$1,004 HKDSave up to HK$5,134 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
0.51ct Round
HK$1,004 HKD