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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6565157448

Certificate GIA 6565157448

Diamond specifications and retailer prices

From HK$38,670 HKD
As of November 1, 2026
Save HK$27,196 HKD (41%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$71,007 HKD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565157448. Listed at 10 retailers as of November 1, 2026, with a 70% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565157448
Dimensions7.31 × 4.55 × 4.55 mm
L/W Ratio1.61
Culet sizeNone
Top View
7.31 mm4.55 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565157448
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.0%

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 1
Current: HK$40,002 HKD|Low: HK$38,670 HKD|High: HK$78,585 HKD|Avg: HK$50,189 HKD|-9.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 5, 2026
Retailer 6HK$38,670 HKD
Retailer 1HK$40,002 HKD
Retailer 4HK$41,358 HKD
Retailer 5HK$42,620 HKD
Retailer 2HK$43,435 HKD
Retailer 7HK$46,084 HKD
Retailer 9HK$48,584 HKD
Retailer 3HK$50,261 HKD
Retailer 8HK$65,866 HKD
Wholesale Diamonds DirectHK$71,007 HKD

36 data points across 10 retailers

10 retailersHK$38,670 HKD to HK$65,866 HKD

A
Cheapest Retailer
-
HK$38,670 HKD
A
Retailer 2
-
HK$40,002 HKD
View
A
Retailer 3
-
HK$41,358 HKD
View
A
Retailer 4
-
HK$42,620 HKD
View
A
Retailer 5
-
HK$43,435 HKD
View
A
Retailer 6
-
HK$46,084 HKD
View
B+
Retailer 7
-
HK$48,584 HKD
View
B+
Retailer 8
-
HK$50,261 HKD
View
B
Retailer 9
-
HK$65,866 HKD
View
Most Expensive
Wholesale Diamonds Direct
299902968 · Oct 26
HK$71,007 HKD
$9,060 USD
View
Price last confirmed 11 days ago
9 more retailers have this diamond
Prices start from HK$38,670 HKDSave up to HK$27,196 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
1.51ct Round
HK$38,670 HKD