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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 $1,919 AUD
SGD 1,817 SGD
As of October 31, 2026
Save $1,546 AUD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,465 AUD 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 $1,919 to $3,465, a $1,546 spread on the same certified stone. Helzberg Diamonds lists it at $3,465. 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: $3,465 AUD|Low: $1,933 AUD|High: $3,465 AUD|Avg: $2,529 AUD
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 8$1,933 AUD
Retailer 6$1,962 AUD
Retailer 9$1,966 AUD
Retailer 12$2,035 AUD
Retailer 4$2,104 AUD
Retailer 5$2,142 AUD
Retailer 7$2,426 AUD
Retailer 3$2,658 AUD
Retailer 2$2,779 AUD
Retailer 11$2,947 AUD
Retailer 10$3,119 AUD
Helzberg Diamonds$3,465 AUD

11 data points across 12 retailers

13 retailers$1,919 AUD to $3,465 AUD

A
Cheapest Retailer
-
$1,919 AUD
SGD 1,817 SGD
A
Retailer 2
-
$1,933 AUD
$1,355 USD
View
A
Retailer 3
-
$1,962 AUD
$1,375 USD
View
A
Retailer 4
-
$1,966 AUD
$1,378 USD
View
A
Retailer 5
-
$2,035 AUD
$1,426 USD
View
A
Retailer 6
-
$2,104 AUD
SGD 1,993 SGD
View
A
Retailer 7
-
$2,142 AUD
£1,182 GBP
View
B+
Retailer 8
-
$2,426 AUD
$1,700 USD
View
B+
Retailer 9
-
$2,658 AUD
$1,863 USD
View
B+
Retailer 10
-
$2,779 AUD
€1,855 EUR
View
B
Retailer 11
-
$2,947 AUD
$2,065 USD
View
B
Retailer 12
-
$3,119 AUD
$2,186 USD
View
Most Expensive
B
Helzberg Diamonds
XZRJLMLMOOLON · Nov 2
$3,465 AUD
$2,428 USD
View
12 more retailers have this diamond
Prices start from $1,919 AUDSave up to $1,546 AUD

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
$1,919 AUD