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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2136190577

Certificate GIA 2136190577

Diamond specifications and retailer prices

From HK$102,504 HKD
$13,065 USD
As of November 1, 2026
Save HK$69,543 HKD (40%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$205,841 HKD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2136190577. Listed at 20 retailers as of November 1, 2026, with a 68% 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2136190577
Dimensions7.36 × 7.34 × 4.56 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.36 mm7.34 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2136190577
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$182,890 HKD|Low: HK$102,504 HKD|High: HK$185,092 HKD|Avg: HK$131,309 HKD|-1.1%
Retailer 1
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
Retailer 19
November 1, 2026
Retailer 16HK$102,504 HKD
Retailer 11HK$107,117 HKD
Retailer 2HK$107,659 HKD
Retailer 4HK$109,667 HKD
Retailer 19HK$114,861 HKD
Retailer 7HK$117,105 HKD
Retailer 13HK$122,440 HKD
Retailer 15HK$123,010 HKD
Retailer 3HK$124,911 HKD
Retailer 9HK$126,865 HKD
Retailer 5HK$131,745 HKD
Retailer 6HK$132,122 HKD
Retailer 17HK$132,122 HKD
Retailer 8HK$135,997 HKD
Retailer 18HK$136,515 HKD
Retailer 12HK$141,183 HKD
Retailer 10HK$165,897 HKD
Retailer 14HK$172,047 HKD
Retailer 1HK$182,890 HKD

40 data points across 19 retailers

20 retailersHK$102,504 HKD to HK$172,047 HKD

B+
Cheapest Retailer
-
HK$102,504 HKD
$13,065 USD
B
Retailer 2
-
HK$107,117 HKD
$13,653 USD
View
B
Retailer 3
-
HK$107,659 HKD
$13,722 USD
View
B
Retailer 4
-
HK$109,667 HKD
CA$19,414 CAD
View
B
Retailer 5
-
HK$114,861 HKD
$14,640 USD
View
B
Retailer 6
-
HK$117,105 HKD
$14,926 USD
View
B
Retailer 7
-
HK$122,440 HKD
£12,288 GBP
View
Retailer 8
-
HK$123,010 HKD
A$24,121 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
HK$124,911 HKD
$15,921 USD
View
B
Retailer 10
-
HK$126,865 HKD
$16,170 USD
View
B
Retailer 11
-
HK$131,745 HKD
$16,792 USD
View
B
Retailer 12
-
HK$132,122 HKD
$16,840 USD
View
B
Retailer 13
-
HK$132,122 HKD
$16,840 USD
View
B
Retailer 14
-
HK$135,997 HKD
$17,334 USD
View
B
Retailer 15
-
HK$136,515 HKD
$17,400 USD
View
B
Retailer 16
-
HK$141,183 HKD
€17,138 EUR
View
B
Retailer 17
-
HK$165,897 HKD
$21,145 USD
View
B
Retailer 18
-
HK$172,047 HKD
ZAR 354,262 ZAR
View
Retailer 19
-
HK$182,890 HKD
£18,355 GBP
View
Price under review
Most Expensive
Diamond Quarter
1.51SI1G217770E1N · Oct 29
HK$205,841 HKD
£20,658 GBP
View
Price under review
19 more retailers have this diamond
Prices start from HK$102,504 HKDSave up to HK$69,543 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.

B+
1.51ct Round
HK$102,504 HKD