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Marquise|Natural|GIA

0.81ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1559515648

Certificate GIA 1559515648

Diamond specifications and retailer prices

From HK$6,630 HKD
$845 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: HK$6,630 HKD at The Diamond Guys
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at The Diamond Guys

About this 0.81ct natural marquise diamond

This 0.81ct natural marquise sits in the just-under-one-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 1559515648. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

0.81
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.24°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 1559515648
Dimensions9.33 × 4.91 × 3.10 mm
L/W Ratio1.90
Culet sizeNone
Top View
9.33 mm4.91 mm0.81 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1559515648
Side View
Table 59.0%Crown 39.24°Girdle: MED-THKPavilion 40.11°Culet: NoneDepth 63.1%

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 2
Current: HK$5,208 HKD|Low: HK$3,322 HKD|High: HK$18,036 HKD|Avg: HK$9,941 HKD|-57.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
The Diamond Guys
August 25, 2026
Retailer 4HK$3,322 HKD
Retailer 1HK$5,208 HKD
The Diamond GuysHK$6,630 HKD
Retailer 3HK$6,913 HKD
Retailer 7HK$7,862 HKD
Retailer 2HK$8,518 HKD
Retailer 5HK$8,544 HKD
Retailer 6HK$8,687 HKD
Retailer 8HK$13,536 HKD

43 data points across 9 retailers

1 retailer

B+
The Diamond Guys
1963431900 · Nov 2
HK$6,630 HKD
$845 USD
View

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+
0.81ct Marquise
HK$6,630 HKD