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Round|Natural|GIA

1.29ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5241083858

Certificate GIA 5241083858

Diamond specifications and retailer prices

From €1,971 EUR
SGD 2,988 SGD
As of October 31, 2026
Save €1,712 EUR (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €3,683 EUR 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 €1,971 to €3,683, a €1,712 spread on the same certified stone. Helzberg Diamonds lists it at €3,683. 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
Colour
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: €3,683 EUR|Low: €1,971 EUR|High: €3,683 EUR|Avg: €2,566 EUR
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€1,971 EUR
Retailer 8€2,064 EUR
Retailer 5€2,082 EUR
Retailer 14€2,105 EUR
Retailer 15€2,140 EUR
Retailer 3€2,141 EUR
Retailer 2€2,299 EUR
Retailer 7€2,332 EUR
Retailer 16€2,520 EUR
Retailer 6€2,634 EUR
Retailer 10€2,685 EUR
Retailer 12€2,729 EUR
Retailer 9€2,749 EUR
Retailer 4€3,264 EUR
Retailer 11€3,487 EUR
Helzberg Diamonds€3,683 EUR

34 data points across 16 retailers

16 retailers€1,971 EUR to €3,683 EUR

A
Cheapest Retailer
-
€1,971 EUR
SGD 2,988 SGD
A
Retailer 2
-
€2,064 EUR
$2,315 USD
View
A
Retailer 3
-
€2,082 EUR
$2,335 USD
View
A
Retailer 4
-
€2,105 EUR
$2,361 USD
View
A
Retailer 5
-
€2,140 EUR
$2,400 USD
View
A
Retailer 6
-
€2,141 EUR
$2,402 USD
View
B+
Retailer 7
-
€2,299 EUR
£2,030 GBP
View
B+
Retailer 8
-
€2,332 EUR
SGD 3,534 SGD
View
B+
Retailer 9
-
€2,520 EUR
$2,827 USD
View
B+
Retailer 10
-
€2,634 EUR
$2,954 USD
View
B+
Retailer 11
-
€2,685 EUR
$3,012 USD
View
B+
Retailer 12
-
€2,729 EUR
£2,410 GBP
View
B+
Retailer 13
-
€2,749 EUR
View
B
Retailer 14
-
€3,264 EUR
$3,661 USD
View
B
Retailer 15
-
€3,487 EUR
$3,911 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKHGOJOLO · Nov 2
€3,683 EUR
$4,131 USD
View
15 more retailers have this diamond
Prices start from €1,971 EURSave up to €1,712 EUR

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
€1,971 EUR