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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6552452687

Certificate GIA 6552452687

Diamond specifications and retailer prices

From HK$66,767 HKD
$8,510 USD
As of November 1, 2026
Save HK$17,653 HKD (21%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$84,420 HKD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552452687. Listed at 6 retailers as of October 29, 2026, with prices from HK$66,767 to HK$84,420, a HK$17,653 spread on the same certified stone. Blue Nile lists it at HK$84,420. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6552452687
Dimensions11.39 × 5.94 × 3.76 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Indented Natural
Top View
11.39 mm5.94 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6552452687
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.3%

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$84,420 HKD|Low: HK$64,633 HKD|High: HK$90,806 HKD|Avg: HK$75,139 HKD|-7.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4HK$66,767 HKD
Retailer 3HK$67,440 HKD
Retailer 5HK$72,204 HKD
Retailer 2HK$72,410 HKD
Retailer 6HK$75,303 HKD
Retailer 7HK$81,498 HKD
Blue NileHK$84,420 HKD

37 data points across 7 retailers

6 retailersHK$66,767 HKD to HK$84,420 HKD

A
Cheapest Retailer
-
HK$66,767 HKD
$8,510 USD
A
Retailer 2
-
HK$67,440 HKD
SGD 11,616 SGD
View
A
Retailer 3
-
HK$72,204 HKD
$9,203 USD
View
A
Retailer 4
-
HK$72,410 HKD
£7,267 GBP
View
B+
Retailer 5
-
HK$75,303 HKD
$9,598 USD
View
Final sale: no returns
Most Expensive
B+
Blue Nile
29415853 · Oct 29
HK$84,420 HKD
$10,760 USD
View
5 more retailers have this diamond
Prices start from HK$66,767 HKDSave up to HK$17,653 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$66,767 HKD