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Round|Natural|GIA

1.20ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6551079188

Certificate GIA 6551079188

Diamond specifications and retailer prices

From $4,280 NZD
As of November 6, 2026
Save $5,113 NZD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,833 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551079188. Listed at 20 retailers as of November 4, 2026, with a 119% 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551079188
Dimensions6.75 × 6.77 × 4.25 mm
L/W Ratio1.00
Top View
6.75 mm6.77 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551079188
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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: $10,833 NZD|Low: $4,280 NZD|High: $10,878 NZD|Avg: $6,604 NZD|+2.8%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$4,280 NZD
Retailer 6$4,472 NZD
Retailer 7$4,999 NZD
Retailer 10$5,155 NZD
Retailer 3$5,198 NZD
Retailer 4$5,792 NZD
Retailer 11$5,886 NZD
Retailer 2$5,963 NZD
Retailer 5$6,543 NZD
Retailer 8$9,393 NZD
Queensmith$10,833 NZD

33 data points across 11 retailers

20 retailers$4,280 NZD to $9,393 NZD

A
Cheapest Retailer
-
$4,280 NZD
A
Retailer 2
-
$4,472 NZD
View
A
Retailer 3
-
$4,999 NZD
View
A
Retailer 4
-
$5,155 NZD
View
A
Retailer 5
-
$5,198 NZD
View
Final sale: no returns
A
Retailer 6
-
$5,262 NZD
View
Retailer 7
-
$5,691 NZD
View
Price last confirmed 44 days ago
Retailer 8
-
$5,691 NZD
View
Price last confirmed 17 days ago
Retailer 9
-
$5,691 NZD
View
Price last confirmed 21 days ago
A
Retailer 10
-
$5,792 NZD
View
A
Retailer 11
-
$5,886 NZD
View
Retailer 12
-
$5,910 NZD
View
Price last confirmed 22 days ago
A
Retailer 13
-
$5,963 NZD
View
A
Retailer 14
-
$6,543 NZD
View
Retailer 15
-
$6,566 NZD
View
Price last confirmed 45 days ago
Retailer 16
-
$6,566 NZD
View
Price last confirmed 19 days ago
B+
Retailer 17
-
$9,393 NZD
View
Retailer 18
-
$9,914 NZD
View
Price last confirmed 46 days ago
Retailer 19
-
$9,914 NZD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
6551079188 · Oct 28
$10,833 NZD
£4,795 GBP
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from $4,280 NZDSave up to $5,113 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
$4,280 NZD