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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6565419637

Certificate GIA 6565419637

Diamond specifications and retailer prices

From $4,369 SGD
HK$26,700 HKD
As of October 31, 2026
Save $4,845 SGD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,405 SGD at NZ Jewellers · As of October 23, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565419637. Listed at 20 retailers as of October 26, 2026, with a 111% 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6565419637
Dimensions6.78 × 6.75 × 4.20 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.78 mm6.75 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565419637
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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: Oct 31
Current: $10,405 SGD|Low: $4,189 SGD|High: $10,405 SGD|Avg: $6,065 SGD
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 17$4,369 SGD
Retailer 3$4,526 SGD
Retailer 12$4,731 SGD
Retailer 7$4,759 SGD
Retailer 18$4,776 SGD
Retailer 19$4,820 SGD
Retailer 15$4,885 SGD
Retailer 14$5,018 SGD
Retailer 13$5,178 SGD
Retailer 5$5,250 SGD
Retailer 8$5,322 SGD
Retailer 2$5,457 SGD
Retailer 4$5,705 SGD
Retailer 6$5,743 SGD
Retailer 11$6,267 SGD
Retailer 16$7,315 SGD
Retailer 9$8,523 SGD
Retailer 10$9,214 SGD
NZ Jewellers$10,405 SGD

11 data points across 19 retailers

20 retailers$4,369 SGD to $9,214 SGD

A
Cheapest Retailer
-
$4,369 SGD
HK$26,700 HKD
A
Retailer 2
-
$4,526 SGD
$3,540 USD
View
B+
Retailer 3
-
$4,731 SGD
$3,701 USD
View
Retailer 4
-
$4,759 SGD
€3,546 EUR
View
Price last confirmed 4 days ago
B+
Retailer 5
-
$4,776 SGD
$3,736 USD
View
B+
Retailer 6
-
$4,820 SGD
$3,770 USD
View
B+
Retailer 7
-
$4,885 SGD
$3,821 USD
View
Final sale: no returns
Retailer 8
-
$5,004 SGD
$3,914 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$5,018 SGD
A$6,039 AUD
View
B+
Retailer 10
-
$5,178 SGD
$4,050 USD
View
B+
Retailer 11
-
$5,250 SGD
$4,107 USD
View
B+
Retailer 12
-
$5,322 SGD
View
B+
Retailer 13
-
$5,457 SGD
£3,361 GBP
View
B+
Retailer 14
-
$5,705 SGD
$4,463 USD
View
B+
Retailer 15
-
$5,743 SGD
£3,537 GBP
View
Retailer 16
-
$6,267 SGD
$4,902 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$7,315 SGD
ZAR 92,435 ZAR
View
B
Retailer 18
-
$8,523 SGD
$6,667 USD
View
B
Retailer 19
-
$9,214 SGD
£5,675 GBP
View
Most Expensive
NZ Jewellers
0bb5407c-ebf0-4ee2-9bd6-67360fc3be45 · Oct 23
$10,405 SGD
$8,139 USD
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from $4,369 SGDSave up to $4,845 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.

A
1.20ct Round
$4,369 SGD