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Marquise|Natural|GIA

0.80ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6541502138

Certificate GIA 6541502138

Diamond specifications and retailer prices

From $1,880 NZD
$1,058 USD
As of November 2, 2026
Save $719 NZD (28%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,009 NZD at Cape Diamonds · As of October 26, 2026
View at Cape 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 6541502138. Listed at 9 retailers as of October 31, 2026, with a 38% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle36.52°
Pavilion angle42.11°
OriginNatural
Grading LabGIA
CertificateGIA 6541502138
Dimensions9.16 × 4.84 × 3.10 mm
L/W Ratio1.89
Top View
9.16 mm4.84 mm0.80 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6541502138
Side View
Table 61.0%Crown 36.52°Girdle: MED-VTKPavilion 42.11°Culet: NoneDepth 64.1%

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 2
Current: $3,009 NZD|Low: $1,770 NZD|High: $3,102 NZD|Avg: $2,399 NZD|-1.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$1,880 NZD
Retailer 2$1,919 NZD
Retailer 5$1,955 NZD
Retailer 7$1,955 NZD
Retailer 4$2,306 NZD
Retailer 3$2,571 NZD
Retailer 8$2,599 NZD
Retailer 9$2,737 NZD
Cape Diamonds$3,009 NZD

30 data points across 9 retailers

9 retailers$1,880 NZD to $2,599 NZD

A
Cheapest Retailer
-
$1,880 NZD
$1,058 USD
Final sale: no returns
A
Retailer 2
-
$1,919 NZD
$1,080 USD
View
A
Retailer 3
-
$1,955 NZD
$1,100 USD
View
A
Retailer 4
-
$1,955 NZD
$1,100 USD
View
A
Retailer 5
-
$2,306 NZD
£1,022 GBP
View
A
Retailer 6
-
$2,571 NZD
£1,139 GBP
View
B+
Retailer 7
-
$2,599 NZD
$1,463 USD
View
Retailer 8
-
$2,737 NZD
A$2,369 AUD
View
Price last confirmed 28 days ago
Most Expensive
Cape Diamonds
cert_6541502138 · Oct 26
$3,009 NZD
ZAR 27,351 ZAR
View
Price last confirmed 7 days ago
8 more retailers have this diamond
Prices start from $1,880 NZDSave up to $719 NZD

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
$1,880 NZD