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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1529902177

Certificate GIA 1529902177

Diamond specifications and retailer prices

From $4,178 NZD
As of November 6, 2026
Save $7,093 NZD (63%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $11,271 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1529902177. Listed at 23 retailers as of November 5, 2026, with prices from $4,178 to $11,271, a $7,093 spread on the same certified stone. NZ Jewellers lists it at $11,271. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1529902177
Dimensions6.76 × 6.73 × 4.23 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.76 mm6.73 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529902177
Side View
Table 56.0%Crown 36.5°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 62.7%

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 6
Current: $11,271 NZD|Low: $4,156 NZD|High: $11,271 NZD|Avg: $6,107 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 7, 2026
Retailer 6$4,178 NZD
Retailer 19$4,425 NZD
Retailer 3$4,782 NZD
Retailer 15$4,827 NZD
Retailer 20$5,159 NZD
Retailer 5$5,249 NZD
Retailer 11$5,258 NZD
Retailer 16$5,284 NZD
Retailer 10$5,368 NZD
Retailer 8$5,392 NZD
Retailer 9$5,392 NZD
Retailer 12$5,484 NZD
Retailer 7$5,648 NZD
Retailer 21$5,821 NZD
Retailer 2$5,886 NZD
Retailer 14$6,220 NZD
Retailer 13$6,492 NZD
Retailer 22$6,581 NZD
Retailer 17$8,348 NZD
Retailer 18$8,581 NZD
Retailer 4$8,991 NZD
NZ Jewellers$11,271 NZD

22 data points across 22 retailers

23 retailers$4,178 NZD to $11,271 NZD

A
Cheapest Retailer
-
$4,178 NZD
A
Retailer 2
-
$4,425 NZD
View
A
Retailer 3
-
$4,782 NZD
View
A
Retailer 4
-
$4,827 NZD
View
A
Retailer 5
-
$5,159 NZD
View
A
Retailer 6
-
$5,249 NZD
View
B+
Retailer 7
-
$5,258 NZD
View
B+
Retailer 8
-
$5,284 NZD
View
Final sale: no returns
B+
Retailer 9
-
$5,368 NZD
View
Retailer 10
-
$5,392 NZD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$5,392 NZD
View
B+
Retailer 12
-
$5,484 NZD
View
B+
Retailer 13
-
$5,648 NZD
View
B+
Retailer 14
-
$5,821 NZD
View
B+
Retailer 15
-
$5,886 NZD
View
Retailer 16
-
$6,018 NZD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
$6,220 NZD
View
B+
Retailer 18
-
$6,492 NZD
View
B+
Retailer 19
-
$6,581 NZD
View
B
Retailer 20
-
$8,348 NZD
View
B
Retailer 21
-
$8,581 NZD
View
B
Retailer 22
-
$8,991 NZD
View
Most Expensive
B
NZ Jewellers
70207aa8-05a6-449f-be79-1473d28e1b34 · Nov 5
$11,271 NZD
$6,248 USD
View
22 more retailers have this diamond
Prices start from $4,178 NZDSave up to $7,093 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
1.20ct Round
$4,178 NZD