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Marquise|Natural|GIA

0.80ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 3565688587

Certificate GIA 3565688587

Diamond specifications and retailer prices

From HK$10,550 HKD
SGD 1,817 SGD
As of October 31, 2026
Save HK$8,501 HKD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$19,050 HKD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

About this 0.8ct natural marquise diamond

This 0.8ct natural marquise sits in the just-under-one-carat band, graded I 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 3565688587. Listed at 13 retailers as of October 31, 2026, with prices from HK$10,550 to HK$19,050, a HK$8,501 spread on the same certified stone. Helzberg Diamonds lists it at HK$19,050. 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

0.80
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.91°
Pavilion angle39.69°
OriginNatural
Grading LabGIA
CertificateGIA 3565688587
Dimensions9.03 × 4.77 × 3.05 mm
L/W Ratio1.89
Culet sizeNone
Top View
9.03 mm4.77 mm0.80 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3565688587
Side View
Table 59.0%Crown 39.91°Girdle: STK-VTKPavilion 39.69°Culet: NoneDepth 63.9%

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: Oct 31
Current: HK$19,050 HKD|Low: HK$10,628 HKD|High: HK$19,050 HKD|Avg: HK$13,908 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
November 2, 2026
Retailer 8HK$10,628 HKD
Retailer 6HK$10,788 HKD
Retailer 9HK$10,812 HKD
Retailer 12HK$11,189 HKD
Retailer 4HK$11,572 HKD
Retailer 5HK$11,779 HKD
Retailer 7HK$13,338 HKD
Retailer 3HK$14,614 HKD
Retailer 2HK$15,282 HKD
Retailer 11HK$16,202 HKD
Retailer 10HK$17,151 HKD
Helzberg DiamondsHK$19,050 HKD

11 data points across 12 retailers

13 retailersHK$10,550 HKD to HK$19,050 HKD

A
Cheapest Retailer
-
HK$10,550 HKD
SGD 1,817 SGD
A
Retailer 2
-
HK$10,628 HKD
$1,355 USD
View
A
Retailer 3
-
HK$10,788 HKD
$1,375 USD
View
A
Retailer 4
-
HK$10,812 HKD
$1,378 USD
View
A
Retailer 5
-
HK$11,189 HKD
$1,426 USD
View
A
Retailer 6
-
HK$11,572 HKD
SGD 1,993 SGD
View
A
Retailer 7
-
HK$11,779 HKD
£1,182 GBP
View
B+
Retailer 8
-
HK$13,338 HKD
$1,700 USD
View
B+
Retailer 9
-
HK$14,614 HKD
$1,863 USD
View
B+
Retailer 10
-
HK$15,282 HKD
€1,855 EUR
View
B
Retailer 11
-
HK$16,202 HKD
$2,065 USD
View
B
Retailer 12
-
HK$17,151 HKD
$2,186 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Helzberg Diamonds
XZRJLMLMOOLON · Nov 2
HK$19,050 HKD
$2,428 USD
View
12 more retailers have this diamond
Prices start from HK$10,550 HKDSave up to HK$8,501 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
0.80ct Marquise
HK$10,550 HKD