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Round|Lab Grown|IGI

1.58ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG12378004

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12378004

Diamond specifications and retailer prices

From €305 EUR
$341 USD
As of October 29, 2026
Save €2,407 EUR (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €2,712 EUR at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.58ct lab-grown round diamond

This 1.58ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12378004 or 12378004. Listed at 18 retailers as of October 29, 2026, with prices from €305 to €2,712, a €2,407 spread on the same certified stone. Do Amore Diamonds lists it at €2,712. 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

1.58
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12378004
Dimensions7.42 × 7.47 × 4.64 mm
L/W Ratio1.01
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.42 mm7.47 mm1.58 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12378004
Side View
Table 59.0%Crown 35.5°Girdle: MED-UNDPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

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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 29
Current: €2,712 EUR|Low: €305 EUR|High: €2,712 EUR|Avg: €874 EUR
Do Amore Diamonds
Retailer 2
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 18
October 30, 2026
Retailer 17€305 EUR
Retailer 14€354 EUR
Retailer 2€374 EUR
Retailer 5€379 EUR
Retailer 13€379 EUR
Retailer 18€453 EUR
Retailer 6€515 EUR
Retailer 7€604 EUR
Retailer 9€653 EUR
Retailer 11€677 EUR
Retailer 15€678 EUR
Retailer 10€742 EUR
Retailer 16€1,111 EUR
Retailer 8€1,143 EUR
Retailer 4€1,344 EUR
Retailer 3€1,483 EUR
Retailer 12€1,641 EUR
Do Amore Diamonds€2,712 EUR

14 data points across 18 retailers

18 retailers€305 EUR to €2,712 EUR

A
Cheapest Retailer
-
€305 EUR
$341 USD
A
Retailer 2
-
€354 EUR
$396 USD
View
B+
Retailer 3
-
€374 EUR
$418 USD
View
A
Retailer 4
-
€379 EUR
$423 USD
View
A
Retailer 5
-
€379 EUR
$423 USD
View
A
Retailer 6
-
€453 EUR
$506 USD
View
A
Retailer 7
-
€515 EUR
$575 USD
View
Retailer 8
-
€604 EUR
$675 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
€653 EUR
$730 USD
View
A
Retailer 10
-
€677 EUR
£595 GBP
View
A
Retailer 11
-
€678 EUR
$757 USD
View
A
Retailer 12
-
€742 EUR
$829 USD
View
A
Retailer 13
-
€1,111 EUR
$1,241 USD
View
A
Retailer 14
-
€1,143 EUR
$1,277 USD
View
B+
Retailer 15
-
€1,344 EUR
$1,501 USD
View
B+
Retailer 16
-
€1,483 EUR
$1,657 USD
View
B+
Retailer 17
-
€1,641 EUR
£1,444 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9CA57A5A7 · Oct 31
€2,712 EUR
$3,030 USD
View
17 more retailers have this diamond
Prices start from €305 EURSave up to €2,407 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
1.58ct Round
€305 EUR