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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5181599972

Certificate GIA 5181599972

Diamond specifications and retailer prices

From HK$81,164 HKD
$10,345 USD
As of November 1, 2026
Save HK$85,559 HKD (51%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$166,723 HKD at Diamond Quarter · As of October 31, 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 5181599972. Listed at 20 retailers as of October 31, 2026, with prices from HK$81,164 to HK$166,723, a HK$85,559 spread on the same certified stone. Diamond Quarter lists it at HK$166,723. 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 5181599972
Dimensions7.40 × 7.37 × 4.50 mm
L/W Ratio1.00
Top View
7.40 mm7.37 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5181599972
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 60.9%

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$98,479 HKD|Low: HK$76,401 HKD|High: HK$152,803 HKD|Avg: HK$104,574 HKD|-4.8%
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
Retailer 20
November 2, 2026
Retailer 16HK$81,164 HKD
Retailer 13HK$83,619 HKD
Retailer 10HK$85,063 HKD
Retailer 3HK$87,041 HKD
Retailer 11HK$90,343 HKD
Retailer 6HK$91,685 HKD
Retailer 19HK$91,685 HKD
Retailer 1HK$98,479 HKD
Retailer 8HK$99,319 HKD
Retailer 15HK$99,750 HKD
Retailer 2HK$100,849 HKD
Retailer 7HK$106,113 HKD
Retailer 5HK$106,309 HKD
Retailer 17HK$106,309 HKD
Retailer 20HK$109,840 HKD
Retailer 18HK$110,200 HKD
Retailer 4HK$114,602 HKD
Retailer 14HK$134,693 HKD
Retailer 12HK$143,183 HKD
Retailer 9HK$152,803 HKD

44 data points across 20 retailers

20 retailersHK$81,164 HKD to HK$166,723 HKD

B+
Cheapest Retailer
-
HK$81,164 HKD
$10,345 USD
B+
Retailer 2
-
HK$83,619 HKD
$10,658 USD
View
B
Retailer 3
-
HK$85,063 HKD
$10,842 USD
View
B
Retailer 4
-
HK$87,041 HKD
CA$15,408 CAD
View
B
Retailer 5
-
HK$90,343 HKD
$11,515 USD
View
B
Retailer 6
-
HK$91,685 HKD
$11,686 USD
View
B
Retailer 7
-
HK$91,685 HKD
$11,686 USD
View
Final sale: no returns
B
Retailer 8
-
HK$98,479 HKD
£9,883 GBP
View
B
Retailer 9
-
HK$99,319 HKD
$12,659 USD
View
Retailer 10
-
HK$99,750 HKD
A$19,560 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
HK$100,849 HKD
$12,854 USD
View
B
Retailer 12
-
HK$106,113 HKD
$13,525 USD
View
B
Retailer 13
-
HK$106,309 HKD
$13,550 USD
View
B
Retailer 14
-
HK$106,309 HKD
$13,550 USD
View
B
Retailer 15
-
HK$109,840 HKD
$14,000 USD
View
B
Retailer 16
-
HK$114,602 HKD
$14,607 USD
View
B
Retailer 17
-
HK$134,693 HKD
ZAR 277,346 ZAR
View
B
Retailer 18
-
HK$143,183 HKD
£14,370 GBP
View
B
Retailer 19
-
HK$152,803 HKD
$19,476 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1G517287D1N · Oct 31
HK$166,723 HKD
£16,732 GBP
View
19 more retailers have this diamond
Prices start from HK$81,164 HKDSave up to HK$85,559 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$81,164 HKD