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Cushion|Natural|GIA

0.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1549165866

Certificate GIA 1549165866

Diamond specifications and retailer prices

From HK$2,213 HKD
₹26,866 INR
As of November 2, 2026
Save HK$4,792 HKD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$7,005 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1549165866. Listed at 8 retailers as of November 2, 2026, with prices from HK$2,213 to HK$7,005, a HK$4,792 spread on the same certified stone. MOH London lists it at HK$7,005. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1549165866
Dimensions4.63 × 4.51 × 3.00 mm
L/W Ratio1.03
Girdle conditionFaceted
Key to symbols
Feather, Crystal
Top View
4.63 mm4.51 mm0.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1549165866
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 66.6%

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: Nov 2
Current: HK$7,005 HKD|Low: HK$2,209 HKD|High: HK$7,095 HKD|Avg: HK$4,658 HKD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2HK$2,213 HKD
Retailer 3HK$3,960 HKD
Retailer 5HK$4,684 HKD
Retailer 6HK$4,708 HKD
Retailer 7HK$4,862 HKD
Retailer 4HK$5,528 HKD
MOH LondonHK$7,005 HKD

36 data points across 7 retailers

8 retailersHK$2,213 HKD to HK$7,005 HKD

A
Cheapest Retailer
-
HK$2,213 HKD
₹26,866 INR
B+
Retailer 2
-
HK$3,335 HKD
$425 USD
View
B+
Retailer 3
-
HK$3,960 HKD
£397 GBP
View
B+
Retailer 4
-
HK$4,684 HKD
ZAR 9,644 ZAR
View
B
Retailer 5
-
HK$4,708 HKD
$600 USD
View
Retailer 6
-
HK$4,862 HKD
A$953 AUD
View
Price last confirmed 30 days ago
B
Retailer 7
-
HK$5,528 HKD
€671 EUR
View
Most Expensive
B
MOH London
BED87C1C3 · Nov 2
HK$7,005 HKD
£703 GBP
View
7 more retailers have this diamond
Prices start from HK$2,213 HKDSave up to HK$4,792 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 Cushion
HK$2,213 HKD