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Round|Natural|GIA

1.20ct E I1 Round Natural Diamond

EX • E/I1 • GIA 2557678173

Certificate GIA 2557678173

Diamond specifications and retailer prices

From $3,751 NZD
$2,114 USD
As of October 30, 2026
Save $1,434 NZD (28%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $8,866 NZD at NZ Jewellers · As of October 23, 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 E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2557678173. Listed at 7 retailers as of October 30, 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. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557678173
Dimensions6.74 × 6.78 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Indented Natural
Top View
6.74 mm6.78 mm1.20 ctE / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2557678173
Side View
Table 56.0%Crown 36.5°GirdlePavilion 41°Culet: NoneDepth 63.0%

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 30
Current: $8,866 NZD|Low: $3,751 NZD|High: $9,244 NZD|Avg: $5,296 NZD|-3.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$3,751 NZD
Retailer 3$4,150 NZD
Retailer 6$4,150 NZD
Retailer 5$4,342 NZD
Retailer 7$4,894 NZD
Retailer 2$5,185 NZD
Retailer 8$5,422 NZD
NZ Jewellers$8,866 NZD

30 data points across 8 retailers

7 retailers$3,751 NZD to $5,185 NZD

A
Cheapest Retailer
-
$3,751 NZD
$2,114 USD
A
Retailer 2
-
$4,150 NZD
$2,339 USD
View
Retailer 3
-
$4,150 NZD
$2,339 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$4,342 NZD
$2,447 USD
View
Price last confirmed 7 days ago
Retailer 5
-
$4,894 NZD
$2,758 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$5,185 NZD
€2,783 EUR
View
Most Expensive
NZ Jewellers
e7c7eb29-6117-4b01-8e75-3397a0a0bb99 · Oct 23
$8,866 NZD
$4,997 USD
View
Price last confirmed 8 days ago
6 more retailers have this diamond
Prices start from $3,751 NZDSave up to $1,434 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
$3,751 NZD