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Round|Natural|GIA

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1555088566

Certificate GIA 1555088566

Diamond specifications and retailer prices

From $3,513 NZD
As of November 2, 2026
Save $5,157 NZD (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,670 NZD at NZ Jewellers · As of November 2, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555088566. Listed at 6 retailers as of November 2, 2026, with prices from $3,513 to $8,670, a $5,157 spread on the same certified stone. NZ Jewellers lists it at $8,670. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555088566
Dimensions6.72 × 6.79 × 4.22 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Needle, Indented Natural
Top View
6.72 mm6.79 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555088566
Side View
Table 57.0%Crown 36°GirdlePavilion 40.8°CuletDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $8,670 NZD|Low: $3,513 NZD|High: $8,670 NZD|Avg: $4,709 NZD|+13.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$3,513 NZD
Retailer 6$3,554 NZD
Retailer 7$3,588 NZD
Retailer 5$3,620 NZD
Retailer 4$3,720 NZD
Retailer 2$3,979 NZD
Retailer 9$5,157 NZD
Retailer 8$6,299 NZD
NZ Jewellers$8,670 NZD

31 data points across 9 retailers

6 retailers$3,513 NZD to $8,670 NZD

B+
Cheapest Retailer
-
$3,513 NZD
B+
Retailer 2
-
$3,554 NZD
View
B
Retailer 3
-
$3,620 NZD
View
B
Retailer 4
-
$3,720 NZD
View
B
Retailer 5
-
$3,979 NZD
View
Most Expensive
C
NZ Jewellers
098a6ff9-c6fb-4ece-b88b-436af5113d95 · Nov 2
$8,670 NZD
$4,874 USD
View
5 more retailers have this diamond
Prices start from $3,513 NZDSave up to $5,157 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 Round
$3,513 NZD