Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6521501206

Certificate GIA 6521501206

Diamond specifications and retailer prices

From $7,311 SGD
$5,719 USD
As of October 30, 2026
Save $4,807 SGD (40%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,021 SGD 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 18 retailers as of October 29, 2026, with a 66% 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: Oct 30
Current: $9,161 SGD|Low: $7,311 SGD|High: $12,199 SGD|Avg: $8,716 SGD|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$7,311 SGD
Retailer 2$7,389 SGD
Retailer 10$7,738 SGD
Retailer 9$7,785 SGD
Retailer 3$7,896 SGD
Retailer 4$7,987 SGD
Retailer 8$8,178 SGD
Retailer 1$9,161 SGD
Retailer 6$10,208 SGD
Retailer 5$12,118 SGD

42 data points across 10 retailers

18 retailers$7,311 SGD to $12,118 SGD

B+
Cheapest Retailer
-
$7,311 SGD
$5,719 USD
B+
Retailer 2
-
$7,389 SGD
$5,780 USD
View
Retailer 3
-
$7,738 SGD
$6,053 USD
View
Price last confirmed 15 days ago
B
Retailer 4
-
$7,785 SGD
$6,090 USD
View
B+
Retailer 5
-
$7,896 SGD
£4,863 GBP
View
B+
Retailer 6
-
$7,987 SGD
£4,919 GBP
View
Retailer 7
-
$8,178 SGD
A$9,842 AUD
View
Price last confirmed 21 days ago
Retailer 8
-
$8,382 SGD
$6,557 USD
View
Price last confirmed 38 days ago
Retailer 9
-
$8,382 SGD
$6,557 USD
View
Price last confirmed 13 days ago
Retailer 10
-
$8,512 SGD
$6,658 USD
View
Price last confirmed 15 days ago
B
Retailer 11
-
$8,586 SGD
$6,716 USD
View
B
Retailer 12
-
$9,161 SGD
€6,825 EUR
View
Retailer 13
-
$9,672 SGD
$7,566 USD
View
Price last confirmed 39 days ago
Retailer 14
-
$9,672 SGD
$7,566 USD
View
Price last confirmed 12 days ago
B
Retailer 15
-
$10,208 SGD
ZAR 129,001 ZAR
View
B
Retailer 16
-
$12,118 SGD
£7,464 GBP
View
Retailer 17
-
$14,021 SGD
$10,968 USD
View
Price last confirmed 36 days ago
Most Expensive
NZ Jewellers
ff94d009-ce99-4fd1-aa99-fb89a8136b35 · Oct 17
$14,021 SGD
$10,968 USD
View
Price last confirmed 14 days ago
17 more retailers have this diamond
Prices start from $7,311 SGDSave up to $4,807 SGD

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
$7,311 SGD