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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5566279707

Certificate GIA 5566279707

Diamond specifications and retailer prices

From $4,503 NZD
As of November 6, 2026
Save $5,507 NZD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,168 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566279707. Listed at 22 retailers as of November 2, 2026, with a 122% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5566279707
Dimensions6.75 × 6.70 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural, Extra Facet
Top View
6.75 mm6.70 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566279707
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: $11,168 NZD|Low: $4,503 NZD|High: $11,203 NZD|Avg: $7,082 NZD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 9$4,503 NZD
Retailer 4$4,679 NZD
Retailer 7$5,262 NZD
Retailer 10$5,538 NZD
Retailer 5$5,727 NZD
Retailer 2$6,157 NZD
Retailer 3$6,994 NZD
Retailer 6$7,306 NZD
Retailer 8$10,010 NZD
Queensmith$11,168 NZD

25 data points across 10 retailers

22 retailers$4,503 NZD to $10,010 NZD

A
Cheapest Retailer
-
$4,503 NZD
A
Retailer 2
-
$4,679 NZD
View
A
Retailer 3
-
$5,262 NZD
View
B+
Retailer 4
-
$5,359 NZD
View
B+
Retailer 5
-
$5,524 NZD
View
Final sale: no returns
B+
Retailer 6
-
$5,538 NZD
View
B+
Retailer 7
-
$5,538 NZD
View
B+
Retailer 8
-
$5,727 NZD
View
Retailer 9
-
$5,987 NZD
View
Price last confirmed 20 days ago
Retailer 10
-
$5,987 NZD
View
Price last confirmed 26 days ago
B+
Retailer 11
-
$6,043 NZD
View
B+
Retailer 12
-
$6,157 NZD
View
Retailer 13
-
$6,216 NZD
View
Price last confirmed 23 days ago
B+
Retailer 14
-
$6,245 NZD
View
B+
Retailer 15
-
$6,274 NZD
View
Retailer 16
-
$6,418 NZD
View
Price last confirmed 34 days ago
Retailer 17
-
$6,907 NZD
View
Price last confirmed 20 days ago
B
Retailer 18
-
$6,994 NZD
View
B+
Retailer 19
-
$7,306 NZD
View
B
Retailer 20
-
$10,010 NZD
View
Retailer 21
-
$10,430 NZD
View
Price last confirmed 21 days ago
Most Expensive
Queensmith
5566279707 · Oct 28
$11,168 NZD
£4,875 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $4,503 NZDSave up to $5,507 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
$4,503 NZD