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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6551543873

Certificate GIA 6551543873

Diamond specifications and retailer prices

From HK$74,318 HKD
$9,472 USD
As of November 1, 2026
Save HK$59,183 HKD (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$133,501 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise 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 stated by the retailer rather than the lab and certified by GIA 6551543873. Listed at 17 retailers as of October 30, 2026, with prices from HK$74,318 to HK$133,501, a HK$59,183 spread on the same certified stone. NZ Jewellers lists it at HK$133,501. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.97°
Pavilion angle41.43°
OriginNatural
Grading LabGIA
CertificateGIA 6551543873
Dimensions11.30 × 5.97 × 3.78 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.30 mm5.97 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551543873
Side View
Table 60.0%Crown 36.97°Girdle: THN-THKPavilion 41.43°Culet: NoneDepth 63.3%

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$90,251 HKD|Low: HK$85,808 HKD|High: HK$126,610 HKD|Avg: HK$98,650 HKD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3HK$85,808 HKD
Retailer 9HK$86,778 HKD
Retailer 8HK$88,112 HKD
Retailer 7HK$89,074 HKD
Retailer 1HK$90,251 HKD
Retailer 6HK$91,846 HKD
Retailer 2HK$100,896 HKD
Retailer 5HK$117,679 HKD
Retailer 4HK$125,105 HKD

43 data points across 9 retailers

17 retailersHK$74,318 HKD to HK$133,501 HKD

B+
Cheapest Retailer
-
HK$74,318 HKD
$9,472 USD
B+
Retailer 2
-
HK$79,206 HKD
$10,095 USD
View
Retailer 3
-
HK$80,101 HKD
$10,209 USD
View
Price last confirmed 17 days ago
Retailer 4
-
HK$80,768 HKD
$10,294 USD
View
Price last confirmed 11 days ago
B+
Retailer 5
-
HK$85,444 HKD
$10,890 USD
View
B+
Retailer 6
-
HK$85,808 HKD
£8,611 GBP
View
B+
Retailer 7
-
HK$86,778 HKD
$11,060 USD
View
B
Retailer 8
-
HK$88,112 HKD
$11,230 USD
View
Retailer 9
-
HK$89,074 HKD
A$17,466 AUD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
HK$90,251 HKD
£9,057 GBP
View
B+
Retailer 11
-
HK$91,846 HKD
$11,706 USD
View
B
Retailer 12
-
HK$100,124 HKD
$12,761 USD
View
B
Retailer 13
-
HK$100,896 HKD
€12,247 EUR
View
Retailer 14
-
HK$105,381 HKD
$13,431 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
HK$117,679 HKD
ZAR 242,301 ZAR
View
B
Retailer 16
-
HK$125,105 HKD
£12,555 GBP
View
Most Expensive
B
NZ Jewellers
04e58fd2-03b5-4f0a-8a02-4f720a580b04 · Oct 30
HK$133,501 HKD
$17,015 USD
View
16 more retailers have this diamond
Prices start from HK$74,318 HKDSave up to HK$59,183 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 Marquise
HK$74,318 HKD