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Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1543161928

Certificate GIA 1543161928

Diamond specifications and retailer prices

From $5,519 NZD
HK$24,300 HKD
As of November 1, 2026
Save $7,487 NZD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,006 NZD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1543161928. Listed at 19 retailers as of October 30, 2026, with prices from $5,519 to $13,006, a $7,487 spread on the same certified stone. NZ Jewellers lists it at $13,006. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1543161928
Dimensions6.76 × 6.72 × 4.23 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle, Cavity, Natural
Top View
6.76 mm6.72 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543161928
Side View
Table 57.0%Crown 36.5°Girdle: THN-SLIPavilion 41°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 1
Current: $13,006 NZD|Low: $5,473 NZD|High: $17,313 NZD|Avg: $9,444 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
November 1, 2026
Retailer 11$5,519 NZD
Retailer 12$6,568 NZD
Retailer 14$6,890 NZD
Retailer 3$7,062 NZD
Retailer 13$7,097 NZD
Retailer 2$7,183 NZD
Retailer 4$7,194 NZD
Retailer 6$7,464 NZD
Retailer 9$7,589 NZD
Retailer 8$8,262 NZD
Retailer 10$9,176 NZD
Retailer 7$12,484 NZD
NZ Jewellers$13,006 NZD
Retailer 5$17,313 NZD

39 data points across 14 retailers

19 retailers$5,519 NZD to $13,006 NZD

A
Cheapest Retailer
-
$5,519 NZD
HK$24,300 HKD
A
Retailer 2
-
$6,041 NZD
$3,405 USD
View
A
Retailer 3
-
$6,448 NZD
A$5,591 AUD
View
A
Retailer 4
-
$6,568 NZD
$3,702 USD
View
B+
Retailer 5
-
$6,890 NZD
$3,883 USD
View
Final sale: no returns
B+
Retailer 6
-
$6,961 NZD
SGD 5,302 SGD
View
B+
Retailer 7
-
$7,062 NZD
$3,980 USD
View
B+
Retailer 8
-
$7,097 NZD
$4,000 USD
View
B+
Retailer 9
-
$7,183 NZD
£3,188 GBP
View
B+
Retailer 10
-
$7,194 NZD
A$6,238 AUD
View
B+
Retailer 11
-
$7,464 NZD
$4,207 USD
View
B+
Retailer 12
-
$7,464 NZD
$4,207 USD
View
B+
Retailer 13
-
$7,589 NZD
£3,368 GBP
View
B+
Retailer 14
-
$7,728 NZD
$4,355 USD
View
B+
Retailer 15
-
$8,262 NZD
€4,435 EUR
View
B+
Retailer 16
-
$8,614 NZD
$4,855 USD
View
B+
Retailer 17
-
$9,176 NZD
ZAR 83,548 ZAR
View
B
Retailer 18
-
$12,484 NZD
£5,540 GBP
View
Most Expensive
B
NZ Jewellers
2cfba05b-86f4-4373-9dfc-8950396eabee · Oct 30
$13,006 NZD
$7,330 USD
View
18 more retailers have this diamond
Prices start from $5,519 NZDSave up to $7,487 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
$5,519 NZD