Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 3515024129

Certificate GIA 3515024129

Diamond specifications and retailer prices

From $4,853 USD
As of October 29, 2026
Save $6,115 USD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,968 USD at NZ Jewellers · As of October 27, 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 3515024129. Listed at 19 retailers as of October 27, 2026, with prices from $4,853 to $10,968, a $6,115 spread on the same certified stone. NZ Jewellers lists it at $10,968. 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 angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3515024129
Dimensions6.79 × 6.78 × 4.24 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.79 mm6.78 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515024129
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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 29
Current: $9,713 USD|Low: $4,570 USD|High: $9,778 USD|Avg: $6,393 USD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10$4,853 USD
Retailer 6$5,195 USD
Retailer 8$5,484 USD
Retailer 2$5,540 USD
Retailer 7$6,048 USD
Retailer 4$6,210 USD
Retailer 9$6,398 USD
Retailer 3$6,763 USD
Retailer 5$7,985 USD
Retailer 1$9,713 USD

42 data points across 10 retailers

19 retailers$4,853 USD to $10,968 USD

B+
Cheapest Retailer
-
$4,853 USD
B
Retailer 2
-
$5,181 USD
View
B+
Retailer 3
-
$5,195 USD
View
B
Retailer 4
-
$5,249 USD
View
B
Retailer 5
-
$5,484 USD
View
Final sale: no returns
B
Retailer 6
-
$5,540 USD
View
B
Retailer 7
-
$5,941 USD
View
B
Retailer 8
-
$5,941 USD
View
B
Retailer 9
-
$5,941 USD
View
Retailer 10
-
$6,048 USD
View
Price last confirmed 21 days ago
Retailer 11
-
$6,048 USD
View
Price last confirmed 23 days ago
Retailer 12
-
$6,048 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$6,210 USD
£4,890 GBP
View
Retailer 14
-
$6,398 USD
A$9,842 AUD
View
Price last confirmed 20 days ago
B
Retailer 15
-
$6,763 USD
€6,441 EUR
View
B
Retailer 16
-
$6,855 USD
View
B
Retailer 17
-
$7,985 USD
ZAR 129,005 ZAR
View
B
Retailer 18
-
$9,713 USD
£7,648 GBP
View
Most Expensive
B
NZ Jewellers
e25dd8ef-a01f-40d5-936f-d556933c6d32 · Oct 27
$10,968 USD
View
18 more retailers have this diamond
Prices start from $4,853 USDSave up to $6,115 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.

B+
1.20ct Round
$4,853 USD