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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 $1,720 SGD
As of October 31, 2026
Save $1,386 SGD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,105 SGD 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 $1,720 to $3,105, a $1,386 spread on the same certified stone. Helzberg Diamonds lists it at $3,105. 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: $3,105 SGD|Low: $1,732 SGD|High: $3,105 SGD|Avg: $2,261 SGD
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 3, 2026
Retailer 8$1,732 SGD
Retailer 6$1,758 SGD
Retailer 9$1,762 SGD
Retailer 12$1,824 SGD
Retailer 4$1,886 SGD
Retailer 2$1,936 SGD
Retailer 7$2,174 SGD
Retailer 3$2,382 SGD
Retailer 5$2,491 SGD
Retailer 11$2,641 SGD
Retailer 10$2,796 SGD
Helzberg Diamonds$3,105 SGD

12 data points across 12 retailers

13 retailers$1,720 SGD to $3,105 SGD

A
Cheapest Retailer
-
$1,720 SGD
A
Retailer 2
-
$1,732 SGD
$1,355 USD
View
A
Retailer 3
-
$1,758 SGD
$1,375 USD
View
A
Retailer 4
-
$1,762 SGD
$1,378 USD
View
A
Retailer 5
-
$1,824 SGD
$1,426 USD
View
A
Retailer 6
-
$1,886 SGD
View
B+
Retailer 7
-
$1,936 SGD
£1,192 GBP
View
B+
Retailer 8
-
$2,174 SGD
$1,700 USD
View
B+
Retailer 9
-
$2,382 SGD
$1,863 USD
View
B+
Retailer 10
-
$2,491 SGD
€1,855 EUR
View
B
Retailer 11
-
$2,641 SGD
$2,065 USD
View
Retailer 12
-
$2,796 SGD
$2,186 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Helzberg Diamonds
XZRJLMLMOOLON · Nov 2
$3,105 SGD
$2,428 USD
View
12 more retailers have this diamond
Prices start from $1,720 SGDSave up to $1,386 SGD

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
$1,720 SGD