Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6521501206

Certificate GIA 6521501206

Diamond specifications and retailer prices

From $9,563 NZD
A$8,292 AUD
As of November 1, 2026
Save $7,166 NZD (43%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,461 NZD at NZ Jewellers · As of October 17, 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 6521501206. Listed at 19 retailers as of November 1, 2026, with a 75% 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6521501206
Dimensions6.76 × 6.80 × 4.26 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
6.76 mm6.80 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521501206
Side View
Table 56.0%Crown 35°Girdle: THN-STKPavilion 41.4°CuletDepth 62.8%

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 1
Current: $10,926 NZD|Low: $10,147 NZD|High: $16,932 NZD|Avg: $12,096 NZD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7$10,147 NZD
Retailer 2$10,255 NZD
Retailer 10$10,740 NZD
Retailer 9$10,805 NZD
Retailer 1$10,926 NZD
Retailer 6$11,085 NZD
Retailer 8$11,351 NZD
Retailer 5$12,715 NZD
Retailer 4$14,295 NZD
Retailer 3$16,729 NZD

42 data points across 10 retailers

19 retailers$9,563 NZD to $16,729 NZD

B+
Cheapest Retailer
-
$9,563 NZD
A$8,292 AUD
B+
Retailer 2
-
$10,147 NZD
$5,719 USD
View
B+
Retailer 3
-
$10,255 NZD
$5,780 USD
View
Retailer 4
-
$10,740 NZD
$6,053 USD
View
Price last confirmed 17 days ago
B
Retailer 5
-
$10,805 NZD
$6,090 USD
View
B+
Retailer 6
-
$10,926 NZD
£4,849 GBP
View
B
Retailer 7
-
$11,085 NZD
£4,919 GBP
View
Retailer 8
-
$11,351 NZD
A$9,842 AUD
View
Price last confirmed 23 days ago
Retailer 9
-
$11,634 NZD
$6,557 USD
View
Price last confirmed 40 days ago
Retailer 10
-
$11,634 NZD
$6,557 USD
View
Price last confirmed 15 days ago
Retailer 11
-
$11,813 NZD
$6,658 USD
View
Price last confirmed 17 days ago
B
Retailer 12
-
$11,916 NZD
$6,716 USD
View
B
Retailer 13
-
$12,715 NZD
€6,825 EUR
View
Retailer 14
-
$13,424 NZD
$7,566 USD
View
Price last confirmed 41 days ago
Retailer 15
-
$13,424 NZD
$7,566 USD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$14,295 NZD
ZAR 130,158 ZAR
View
B
Retailer 17
-
$16,729 NZD
£7,424 GBP
View
Retailer 18
-
$19,461 NZD
$10,968 USD
View
Price last confirmed 37 days ago
Most Expensive
NZ Jewellers
ff94d009-ce99-4fd1-aa99-fb89a8136b35 · Oct 17
$19,461 NZD
$10,968 USD
View
Price last confirmed 15 days ago
18 more retailers have this diamond
Prices start from $9,563 NZDSave up to $7,166 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
$9,563 NZD