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Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1553370505

Certificate GIA 1553370505

Diamond specifications and retailer prices

From €3,356 EUR
$3,764 USD
As of November 2, 2026
Save €1,627 EUR (33%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €4,982 EUR at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553370505. Listed at 3 retailers as of November 2, 2026, with prices from €3,356 to €4,982, a €1,627 spread on the same certified stone. 77 Diamonds lists it at €4,982. 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

1.21
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.8°
Pavilion angle42.26°
OriginNatural
Grading LabGIA
CertificateGIA 1553370505
Dimensions10.29 × 5.55 × 3.59 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.29 mm5.55 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553370505
Side View
Table 61.0%Crown 38.8°Girdle: MED-VTKPavilion 42.26°Culet: NoneDepth 64.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €4,982 EUR|Low: €2,095 EUR|High: €5,063 EUR|Avg: €3,627 EUR|-0.6%
77 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
November 2, 2026
Retailer 5€2,095 EUR
Retailer 8€2,945 EUR
Retailer 13€3,035 EUR
Retailer 10€3,055 EUR
Retailer 7€3,251 EUR
Retailer 4€3,356 EUR
Retailer 9€3,547 EUR
Retailer 11€3,598 EUR
Retailer 2€3,864 EUR
Retailer 12€4,084 EUR
Retailer 6€4,461 EUR
77 Diamonds€4,982 EUR
Retailer 3€5,063 EUR

17 data points across 13 retailers

3 retailers€3,356 EUR to €4,982 EUR

B
Cheapest Retailer
-
€3,356 EUR
$3,764 USD
B
Retailer 2
-
€3,864 EUR
CA$6,020 CAD
View
Most Expensive
B
77 Diamonds
MQMBK57HBJSE · Nov 2
€4,982 EUR
£4,400 GBP
View
2 more retailers have this diamond
Prices start from €3,356 EURSave up to €1,627 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.

B
1.21ct Marquise
€3,356 EUR