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Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 7566682513

Certificate GIA 7566682513

Diamond specifications and retailer prices

From HK$50,844 HKD
SGD 8,757 SGD
As of November 1, 2026
Save HK$31,210 HKD (38%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$82,055 HKD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7566682513. Listed at 14 retailers as of November 1, 2026, with prices from HK$50,844 to HK$82,055, a HK$31,210 spread on the same certified stone. Helzberg Diamonds lists it at HK$82,055. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.21°
Pavilion angle38.5°
OriginNatural
Grading LabGIA
CertificateGIA 7566682513
Dimensions11.51 × 6.08 × 3.55 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.51 mm6.08 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566682513
Side View
Table 61.0%Crown 34.21°Girdle: MED-THKPavilion 38.5°Culet: NDepth 58.3%

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$82,055 HKD|Low: HK$50,844 HKD|High: HK$82,055 HKD|Avg: HK$61,429 HKD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 11HK$50,844 HKD
Retailer 5HK$52,741 HKD
Retailer 10HK$53,079 HKD
Retailer 8HK$53,802 HKD
Retailer 9HK$54,538 HKD
Retailer 2HK$56,563 HKD
Retailer 3HK$56,727 HKD
Retailer 4HK$63,477 HKD
Retailer 12HK$63,954 HKD
Retailer 13HK$64,344 HKD
Retailer 6HK$64,762 HKD
Retailer 7HK$72,074 HKD
Helzberg DiamondsHK$82,055 HKD

13 data points across 13 retailers

14 retailersHK$50,844 HKD to HK$82,055 HKD

A
Cheapest Retailer
-
HK$50,844 HKD
SGD 8,757 SGD
B+
Retailer 2
-
HK$52,741 HKD
$6,722 USD
View
B+
Retailer 3
-
HK$52,929 HKD
SGD 9,116 SGD
View
B+
Retailer 4
-
HK$53,079 HKD
$6,765 USD
View
B+
Retailer 5
-
HK$53,802 HKD
$6,857 USD
View
B+
Retailer 6
-
HK$54,538 HKD
$6,951 USD
View
B+
Retailer 7
-
HK$56,563 HKD
£5,676 GBP
View
B+
Retailer 8
-
HK$56,727 HKD
$7,230 USD
View
B+
Retailer 9
-
HK$63,477 HKD
$8,090 USD
View
B+
Retailer 10
-
HK$63,954 HKD
$8,151 USD
View
Retailer 11
-
HK$64,344 HKD
$8,201 USD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
HK$64,762 HKD
€7,861 EUR
View
B
Retailer 13
-
HK$72,074 HKD
$9,186 USD
View
Most Expensive
B
Helzberg Diamonds
XZRNLMMMOILHJ · Nov 1
HK$82,055 HKD
$10,458 USD
View
13 more retailers have this diamond
Prices start from HK$50,844 HKDSave up to HK$31,210 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 Marquise
HK$50,844 HKD