CaratHunter
Plans
Round|Lab Grown|IGI

3.12ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG591311621

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591311621

Diamond specifications and retailer prices

From €712 EUR
$796 USD
As of October 31, 2026
Save €4,264 EUR (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,977 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.12ct lab-grown round diamond

This 3.12ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG591311621 or 591311621. Listed at 21 retailers as of October 31, 2026, with prices from €712 to €4,977, a €4,264 spread on the same certified stone. Brilliant Earth lists it at €4,977. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.12
Carat
G
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591311621
Dimensions9.31 × 9.35 × 5.78 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II Faint Blue
Top View
9.31 mm9.35 mm3.12 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591311621
Side View
Table 57.0%Crown 35.3°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: €4,977 EUR|Low: €712 EUR|High: €7,546 EUR|Avg: €1,917 EUR|-34.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 4€712 EUR
Retailer 3€1,078 EUR
Retailer 2€1,172 EUR
Retailer 7€1,179 EUR
Retailer 11€1,216 EUR
Retailer 6€1,217 EUR
Retailer 8€1,667 EUR
Retailer 9€1,714 EUR
Retailer 12€1,818 EUR
Retailer 5€2,058 EUR
Retailer 13€2,391 EUR
Retailer 10€2,902 EUR
Brilliant Earth€4,977 EUR

42 data points across 13 retailers

21 retailers€712 EUR to €4,977 EUR

Retailer 1
-
€636 EUR
$711 USD
Price last confirmed 21 days ago
Retailer 2
-
€692 EUR
$773 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
€712 EUR
$796 USD
View
Final sale: no returns
Retailer 4
-
€738 EUR
$825 USD
View
Price last confirmed 15 days ago
Retailer 5
-
€738 EUR
$825 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
€1,078 EUR
$1,204 USD
View
A
Retailer 7
-
€1,172 EUR
View
A
Retailer 8
-
€1,179 EUR
£1,037 GBP
View
A
Retailer 9
-
€1,216 EUR
$1,358 USD
View
A
Retailer 10
-
€1,217 EUR
$1,360 USD
View
B+
Retailer 11
-
€1,667 EUR
A$2,865 AUD
View
A
Retailer 12
-
€1,714 EUR
ZAR 30,930 ZAR
View
B+
Retailer 13
-
€1,818 EUR
$2,031 USD
View
B+
Retailer 14
-
€2,058 EUR
$2,299 USD
View
Retailer 15
-
€2,075 EUR
$2,318 USD
View
Price last confirmed 24 days ago
B+
Retailer 16
-
€2,180 EUR
$2,436 USD
View
B+
Retailer 17
-
€2,391 EUR
$2,671 USD
View
B+
Retailer 18
-
€2,517 EUR
$2,812 USD
View
B+
Retailer 19
-
€2,545 EUR
$2,843 USD
View
B+
Retailer 20
-
€2,902 EUR
£2,553 GBP
View
Most Expensive
B
Brilliant Earth
10022304A · Oct 31
€4,977 EUR
$5,560 USD
View
20 more retailers have this diamond
Prices start from €712 EURSave up to €4,264 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
3.12ct Round
€712 EUR