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Marquise|Natural|GIA

0.80ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551378239

Certificate GIA 6551378239

Diamond specifications and retailer prices

From $3,396 NZD
$1,914 USD
As of October 26, 2026
Save $2,150 NZD (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,858 NZD at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 0.8ct natural marquise diamond

This 0.8ct natural marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551378239. Listed at 12 retailers as of October 26, 2026, with a 63% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551378239
Dimensions9.42 × 4.90 × 3.01 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Feather, Cloud
Top View
9.42 mm4.90 mm0.80 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551378239
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.5%

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 26
Current: $7,858 NZD|Low: $3,396 NZD|High: $7,858 NZD|Avg: $4,798 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 27, 2026
Retailer 9$3,396 NZD
Retailer 13$3,446 NZD
Retailer 5$3,675 NZD
Retailer 6$3,732 NZD
Retailer 4$3,758 NZD
Retailer 10$3,932 NZD
Retailer 2$4,336 NZD
Retailer 3$4,622 NZD
Retailer 8$4,631 NZD
Retailer 11$5,097 NZD
Retailer 7$5,546 NZD
Retailer 12$6,463 NZD
NZ Jewellers$7,858 NZD

39 data points across 13 retailers

12 retailers$3,396 NZD to $5,546 NZD

A
Cheapest Retailer
-
$3,396 NZD
$1,914 USD
A
Retailer 2
-
$3,446 NZD
$1,942 USD
View
A
Retailer 3
-
$3,675 NZD
$2,071 USD
View
A
Retailer 4
-
$3,732 NZD
£1,656 GBP
View
B+
Retailer 5
-
$3,932 NZD
$2,216 USD
View
B+
Retailer 6
-
$4,336 NZD
$2,444 USD
View
Retailer 7
-
$4,622 NZD
A$4,008 AUD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$4,631 NZD
£2,055 GBP
View
Retailer 9
-
$5,097 NZD
€2,736 EUR
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$5,546 NZD
ZAR 50,493 ZAR
View
Retailer 11
-
$6,463 NZD
£2,868 GBP
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
74675e3d-f34a-4908-a9c6-dd511d231346 · Oct 24
$7,858 NZD
$4,429 USD
View
Price last confirmed 7 days ago
11 more retailers have this diamond
Prices start from $3,396 NZDSave up to $2,150 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
$3,396 NZD