Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6565419637

Certificate GIA 6565419637

Diamond specifications and retailer prices

From $3,379 USD
HK$26,400 HKD
As of October 30, 2026
Save $3,828 USD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,139 USD 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 19 retailers as of October 26, 2026, with a 113% 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
Color
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 30
Current: $8,139 USD|Low: $3,277 USD|High: $8,139 USD|Avg: $4,779 USD
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
October 30, 2026
Retailer 12$3,379 USD
Retailer 2$3,540 USD
Retailer 17$3,723 USD
Retailer 7$3,817 USD
Retailer 11$3,892 USD
Retailer 14$4,107 USD
Retailer 18$4,163 USD
Retailer 10$4,270 USD
Retailer 3$4,275 USD
Retailer 13$4,463 USD
Retailer 15$4,492 USD
Retailer 6$4,550 USD
Retailer 16$4,599 USD
Retailer 9$4,902 USD
Retailer 4$5,503 USD
Retailer 5$6,667 USD
Retailer 8$7,207 USD
NZ Jewellers$8,139 USD

9 data points across 18 retailers

19 retailers$3,379 USD to $7,207 USD

A
Cheapest Retailer
-
$3,379 USD
HK$26,400 HKD
A
Retailer 2
-
$3,540 USD
View
Retailer 3
-
$3,723 USD
€3,546 EUR
View
Price last confirmed 3 days ago
B+
Retailer 4
-
$3,817 USD
A$5,873 AUD
View
B+
Retailer 5
-
$3,892 USD
View
Final sale: no returns
Retailer 6
-
$3,914 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$4,107 USD
View
B+
Retailer 8
-
$4,163 USD
SGD 5,626 SGD
View
Retailer 9
-
$4,270 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$4,275 USD
View
B+
Retailer 11
-
$4,463 USD
View
B+
Retailer 12
-
$4,492 USD
£3,537 GBP
View
B+
Retailer 13
-
$4,550 USD
View
B+
Retailer 14
-
$4,599 USD
£3,621 GBP
View
Retailer 15
-
$4,902 USD
View
Price last confirmed 8 days ago
B
Retailer 16
-
$5,503 USD
ZAR 88,904 ZAR
View
B
Retailer 17
-
$6,667 USD
View
B
Retailer 18
-
$7,207 USD
£5,675 GBP
View
Most Expensive
NZ Jewellers
0bb5407c-ebf0-4ee2-9bd6-67360fc3be45 · Oct 23
$8,139 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from $3,379 USDSave up to $3,828 USD

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
$3,379 USD