Round|Natural|GIA

1.29ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5241083858

Certificate GIA 5241083858

Diamond specifications and retailer prices

From $2,211 USD
SGD 2,988 SGD
As of October 31, 2026
Save $1,920 USD (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,131 USD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5241083858. Listed at 16 retailers as of October 31, 2026, with prices from $2,211 to $4,131, a $1,920 spread on the same certified stone. Helzberg Diamonds lists it at $4,131. 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

1.29
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5241083858
Dimensions6.94 × 6.97 × 4.33 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.94 mm6.97 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5241083858
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $4,131 USD|Low: $2,211 USD|High: $4,131 USD|Avg: $2,878 USD
Helzberg Diamonds
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
November 2, 2026
Retailer 13$2,211 USD
Retailer 8$2,315 USD
Retailer 5$2,335 USD
Retailer 14$2,361 USD
Retailer 15$2,400 USD
Retailer 3$2,402 USD
Retailer 2$2,578 USD
Retailer 7$2,615 USD
Retailer 16$2,827 USD
Retailer 6$2,954 USD
Retailer 10$3,012 USD
Retailer 12$3,061 USD
Retailer 9$3,084 USD
Retailer 4$3,661 USD
Retailer 11$3,911 USD
Helzberg Diamonds$4,131 USD

34 data points across 16 retailers

16 retailers$2,211 USD to $4,131 USD

A
Cheapest Retailer
-
$2,211 USD
SGD 2,988 SGD
A
Retailer 2
-
$2,315 USD
View
A
Retailer 3
-
$2,335 USD
View
A
Retailer 4
-
$2,361 USD
View
A
Retailer 5
-
$2,400 USD
View
A
Retailer 6
-
$2,402 USD
View
B+
Retailer 7
-
$2,578 USD
£2,030 GBP
View
B+
Retailer 8
-
$2,615 USD
SGD 3,534 SGD
View
B+
Retailer 9
-
$2,827 USD
View
B+
Retailer 10
-
$2,954 USD
View
B+
Retailer 11
-
$3,012 USD
View
B+
Retailer 12
-
$3,061 USD
£2,410 GBP
View
B+
Retailer 13
-
$3,084 USD
€2,937 EUR
View
B
Retailer 14
-
$3,661 USD
View
B
Retailer 15
-
$3,911 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKHGOJOLO · Nov 2
$4,131 USD
View
15 more retailers have this diamond
Prices start from $2,211 USDSave up to $1,920 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
1.29ct Round
$2,211 USD