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Round|Natural|GIA

0.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7553393622

Certificate GIA 7553393622

Diamond specifications and retailer prices

From HK$4,982 HKD
$635 USD
As of October 27, 2026
Save HK$11,761 HKD (70%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$16,743 HKD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7553393622. Listed at 24 retailers as of October 27, 2026, with prices from HK$4,982 to HK$16,743, a HK$11,761 spread on the same certified stone. NZ Jewellers lists it at HK$16,743. 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

0.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7553393622
Dimensions5.08 × 5.10 × 3.21 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Cloud
Top View
5.08 mm5.10 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7553393622
Side View
Table 55.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.1%

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$7,134 HKD|Low: HK$3,719 HKD|High: HK$12,475 HKD|Avg: HK$7,001 HKD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 8HK$3,719 HKD
Retailer 10HK$5,210 HKD
Retailer 2HK$5,665 HKD
Retailer 4HK$6,316 HKD
Retailer 5HK$6,515 HKD
Retailer 3HK$6,946 HKD
Retailer 1HK$7,134 HKD
Retailer 9HK$8,028 HKD
Retailer 6HK$8,220 HKD
Retailer 7HK$12,395 HKD

35 data points across 10 retailers

24 retailersHK$4,982 HKD to HK$16,743 HKD

A
Cheapest Retailer
-
HK$4,982 HKD
$635 USD
A
Retailer 2
-
HK$5,037 HKD
$642 USD
View
Retailer 3
-
HK$5,210 HKD
$664 USD
View
Price last confirmed 8 days ago
Retailer 4
-
HK$5,210 HKD
$664 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
HK$5,312 HKD
$677 USD
View
B+
Retailer 6
-
HK$5,578 HKD
$711 USD
View
B+
Retailer 7
-
HK$5,665 HKD
$722 USD
View
Retailer 8
-
HK$5,706 HKD
$727 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
HK$5,916 HKD
$754 USD
View
B+
Retailer 10
-
HK$6,120 HKD
$780 USD
View
B+
Retailer 11
-
HK$6,120 HKD
$780 USD
View
Retailer 12
-
HK$6,316 HKD
$805 USD
View
Price last confirmed 5 days ago
B+
Retailer 13
-
HK$6,355 HKD
$810 USD
View
B+
Retailer 14
-
HK$6,390 HKD
$815 USD
View
B+
Retailer 15
-
HK$6,515 HKD
£654 GBP
View
B+
Retailer 16
-
HK$6,763 HKD
$862 USD
View
B+
Retailer 17
-
HK$6,946 HKD
£697 GBP
View
B+
Retailer 18
-
HK$7,134 HKD
€866 EUR
View
B+
Retailer 19
-
HK$7,438 HKD
$948 USD
View
Retailer 20
-
HK$8,028 HKD
A$1,574 AUD
View
Price last confirmed 29 days ago
Retailer 21
-
HK$8,220 HKD
ZAR 16,926 ZAR
View
Price last confirmed 7 days ago
B
Retailer 22
-
HK$12,395 HKD
£1,244 GBP
View
B
Retailer 23
-
HK$15,334 HKD
CA$2,715 CAD
View
Most Expensive
B
NZ Jewellers
345bfcde-ed97-42b4-ac88-7a1a1bb92407 · Oct 27
HK$16,743 HKD
$2,134 USD
View
23 more retailers have this diamond
Prices start from HK$4,982 HKDSave up to HK$11,761 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$4,982 HKD