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Marquise|Natural|GIA

1.20ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 6545625677

Certificate GIA 6545625677

Diamond specifications and retailer prices

From $11,783 NZD
As of November 6, 2026
Save $7,131 NZD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $23,445 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded G 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 6545625677. Listed at 12 retailers as of November 4, 2026, with a 61% 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

1.20
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545625677
Dimensions11.89 × 5.23 × 3.31 mm
L/W Ratio2.27
Top View
11.89 mm5.23 mm1.20 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545625677
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $23,445 NZD|Low: $11,633 NZD|High: $23,445 NZD|Avg: $14,621 NZD|+1.7%
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
November 7, 2026
Retailer 9$11,783 NZD
Retailer 5$12,046 NZD
Retailer 8$12,117 NZD
Retailer 7$12,934 NZD
Retailer 6$13,085 NZD
Retailer 10$13,271 NZD
Retailer 4$13,394 NZD
Retailer 11$13,937 NZD
Retailer 2$14,139 NZD
Retailer 3$15,198 NZD
Retailer 12$17,103 NZD
Retailer 13$18,914 NZD
NZ Jewellers$23,445 NZD

16 data points across 13 retailers

12 retailers$11,783 NZD to $18,914 NZD

B
Cheapest Retailer
-
$11,783 NZD
B
Retailer 2
-
$12,117 NZD
View
B
Retailer 3
-
$12,934 NZD
View
B
Retailer 4
-
$13,085 NZD
View
B
Retailer 5
-
$13,271 NZD
View
Retailer 6
-
$13,394 NZD
View
Price last confirmed 35 days ago
B
Retailer 7
-
$13,937 NZD
View
B
Retailer 8
-
$14,139 NZD
View
B
Retailer 9
-
$15,198 NZD
View
B
Retailer 10
-
$17,103 NZD
View
B
Retailer 11
-
$18,914 NZD
View
Most Expensive
NZ Jewellers
7c049642-ce40-4b7b-9fc2-ef4b83bc0466 · Nov 5
$23,445 NZD
$12,997 USD
View
Price under review
11 more retailers have this diamond
Prices start from $11,783 NZDSave up to $7,131 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.

B
1.20ct Marquise
$11,783 NZD